    <SEC-DOCUMENT>0000874238-23-000108-index.html : 20230808
    <SEC-HEADER>0000874238-23-000108.hdr.sgml : 20230808
    <ACCEPTANCE-DATETIME>20230808091037
    ACCESSION NUMBER:		0000874238-23-000108
    CONFORMED SUBMISSION TYPE:	10-Q
    PUBLIC DOCUMENT COUNT:		225
    CONFORMED PERIOD OF REPORT:	20230630
    FILED AS OF DATE:		20230808
    DATE AS OF CHANGE:		20230808

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			STERLING INFRASTRUCTURE, INC.
    		CENTRAL INDEX KEY:			0000874238
    		STANDARD INDUSTRIAL CLASSIFICATION:	HEAVY CONSTRUCTION OTHER THAN BUILDING CONST - CONTRACTORS [1600]
    		IRS NUMBER:				251655321
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		10-Q
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-31993
    		FILM NUMBER:		231149570

    	BUSINESS ADDRESS:
    		STREET 1:		1800 HUGHES LANDING BLVD.
    		STREET 2:		SUITE 250
    		CITY:			THE WOODLANDS
    		STATE:			TX
    		ZIP:			77380
    		BUSINESS PHONE:		281-214-0777

    	MAIL ADDRESS:
    		STREET 1:		1800 HUGHES LANDING BLVD.
    		STREET 2:		SUITE 250
    		CITY:			THE WOODLANDS
    		STATE:			TX
    		ZIP:			77380

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	STERLING CONSTRUCTION CO INC
    		DATE OF NAME CHANGE:	20020329

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OAKHURST CO INC
    		DATE OF NAME CHANGE:	19950831

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	OAKHURST CAPITAL INC
    		DATE OF NAME CHANGE:	19931130
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>10-Q
    <SEQUENCE>1
    <FILENAME>strl-20230630.htm
    <DESCRIPTION>FORM 10-Q
    <TEXT>
    Document 1 - file: strl-20230630.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.2
    <SEQUENCE>2
    <FILENAME>ex42-descriptionofsecuri.htm
    <DESCRIPTION>EX-4.2
    <TEXT>
    Document 2 - file: ex42-descriptionofsecuri.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>3
    <FILENAME>ex101-fourthamendmenttoc.htm
    <DESCRIPTION>EX-10.1
    <TEXT>
    Document 3 - file: ex101-fourthamendmenttoc.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-31.1
    <SEQUENCE>4
    <FILENAME>a2023063010-qexhibit311.htm
    <DESCRIPTION>EX-31.1
    <TEXT>
    Document 4 - file: a2023063010-qexhibit311.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-31.2
    <SEQUENCE>5
    <FILENAME>a2023063010-qexhibit312.htm
    <DESCRIPTION>EX-31.2
    <TEXT>
    Document 5 - file: a2023063010-qexhibit312.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-32.1
    <SEQUENCE>6
    <FILENAME>a2023063010-qexhibit321.htm
    <DESCRIPTION>EX-32.1
    <TEXT>
    Document 6 - file: a2023063010-qexhibit321.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-32.2
    <SEQUENCE>7
    <FILENAME>a2023063010-qexhibit322.htm
    <DESCRIPTION>EX-32.2
    <TEXT>
    Document 7 - file: a2023063010-qexhibit322.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>8
    <FILENAME>strl-20230630.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 8 - file: strl-20230630.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.CAL
    <SEQUENCE>9
    <FILENAME>strl-20230630_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
    <TEXT>
    Document 9 - file: strl-20230630_cal.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>10
    <FILENAME>strl-20230630_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 10 - file: strl-20230630_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>11
    <FILENAME>strl-20230630_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 11 - file: strl-20230630_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>12
    <FILENAME>strl-20230630_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 12 - file: strl-20230630_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>ex101-fourthamendmenttoc001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: ex101-fourthamendmenttoc001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>ex101-fourthamendmenttoc002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: ex101-fourthamendmenttoc002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>ex101-fourthamendmenttoc003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: ex101-fourthamendmenttoc003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>ex101-fourthamendmenttoc004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: ex101-fourthamendmenttoc004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>ex101-fourthamendmenttoc005.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 17 - file: ex101-fourthamendmenttoc005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>ex101-fourthamendmenttoc006.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 18 - file: ex101-fourthamendmenttoc006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>ex101-fourthamendmenttoc007.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 19 - file: ex101-fourthamendmenttoc007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>ex101-fourthamendmenttoc008.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 20 - file: ex101-fourthamendmenttoc008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>ex101-fourthamendmenttoc009.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 21 - file: ex101-fourthamendmenttoc009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>ex101-fourthamendmenttoc010.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 22 - file: ex101-fourthamendmenttoc010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>ex101-fourthamendmenttoc011.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 23 - file: ex101-fourthamendmenttoc011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>ex101-fourthamendmenttoc012.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 24 - file: ex101-fourthamendmenttoc012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>ex101-fourthamendmenttoc013.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 25 - file: ex101-fourthamendmenttoc013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>ex101-fourthamendmenttoc014.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 26 - file: ex101-fourthamendmenttoc014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>ex101-fourthamendmenttoc015.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 27 - file: ex101-fourthamendmenttoc015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>ex101-fourthamendmenttoc016.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 28 - file: ex101-fourthamendmenttoc016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>ex101-fourthamendmenttoc017.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 29 - file: ex101-fourthamendmenttoc017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>ex101-fourthamendmenttoc018.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 30 - file: ex101-fourthamendmenttoc018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>ex101-fourthamendmenttoc019.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 31 - file: ex101-fourthamendmenttoc019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>ex101-fourthamendmenttoc020.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 32 - file: ex101-fourthamendmenttoc020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>ex101-fourthamendmenttoc021.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 33 - file: ex101-fourthamendmenttoc021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>ex101-fourthamendmenttoc022.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 34 - file: ex101-fourthamendmenttoc022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>ex101-fourthamendmenttoc023.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 35 - file: ex101-fourthamendmenttoc023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>ex101-fourthamendmenttoc024.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 36 - file: ex101-fourthamendmenttoc024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>ex101-fourthamendmenttoc025.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 37 - file: ex101-fourthamendmenttoc025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>ex101-fourthamendmenttoc026.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 38 - file: ex101-fourthamendmenttoc026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>ex101-fourthamendmenttoc027.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 39 - file: ex101-fourthamendmenttoc027.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>ex101-fourthamendmenttoc028.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 40 - file: ex101-fourthamendmenttoc028.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>ex101-fourthamendmenttoc029.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 41 - file: ex101-fourthamendmenttoc029.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>ex101-fourthamendmenttoc030.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 42 - file: ex101-fourthamendmenttoc030.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>ex101-fourthamendmenttoc031.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 43 - file: ex101-fourthamendmenttoc031.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>ex101-fourthamendmenttoc032.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 44 - file: ex101-fourthamendmenttoc032.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>ex101-fourthamendmenttoc033.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 45 - file: ex101-fourthamendmenttoc033.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>46
    <FILENAME>ex101-fourthamendmenttoc034.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 46 - file: ex101-fourthamendmenttoc034.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>47
    <FILENAME>ex101-fourthamendmenttoc035.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 47 - file: ex101-fourthamendmenttoc035.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>48
    <FILENAME>ex101-fourthamendmenttoc036.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 48 - file: ex101-fourthamendmenttoc036.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>49
    <FILENAME>ex101-fourthamendmenttoc037.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 49 - file: ex101-fourthamendmenttoc037.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>50
    <FILENAME>ex101-fourthamendmenttoc038.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 50 - file: ex101-fourthamendmenttoc038.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>51
    <FILENAME>ex101-fourthamendmenttoc039.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 51 - file: ex101-fourthamendmenttoc039.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>52
    <FILENAME>ex101-fourthamendmenttoc040.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 52 - file: ex101-fourthamendmenttoc040.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>53
    <FILENAME>ex101-fourthamendmenttoc041.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 53 - file: ex101-fourthamendmenttoc041.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>54
    <FILENAME>ex101-fourthamendmenttoc042.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 54 - file: ex101-fourthamendmenttoc042.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>55
    <FILENAME>ex101-fourthamendmenttoc043.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 55 - file: ex101-fourthamendmenttoc043.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>56
    <FILENAME>ex101-fourthamendmenttoc044.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 56 - file: ex101-fourthamendmenttoc044.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>57
    <FILENAME>ex101-fourthamendmenttoc045.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 57 - file: ex101-fourthamendmenttoc045.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>58
    <FILENAME>ex101-fourthamendmenttoc046.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 58 - file: ex101-fourthamendmenttoc046.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>59
    <FILENAME>ex101-fourthamendmenttoc047.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 59 - file: ex101-fourthamendmenttoc047.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>60
    <FILENAME>ex101-fourthamendmenttoc048.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 60 - file: ex101-fourthamendmenttoc048.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>61
    <FILENAME>ex101-fourthamendmenttoc049.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 61 - file: ex101-fourthamendmenttoc049.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>62
    <FILENAME>ex101-fourthamendmenttoc050.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 62 - file: ex101-fourthamendmenttoc050.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>63
    <FILENAME>ex101-fourthamendmenttoc051.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 63 - file: ex101-fourthamendmenttoc051.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>64
    <FILENAME>ex101-fourthamendmenttoc052.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 64 - file: ex101-fourthamendmenttoc052.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>65
    <FILENAME>ex101-fourthamendmenttoc053.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 65 - file: ex101-fourthamendmenttoc053.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>66
    <FILENAME>ex101-fourthamendmenttoc054.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 66 - file: ex101-fourthamendmenttoc054.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>67
    <FILENAME>ex101-fourthamendmenttoc055.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 67 - file: ex101-fourthamendmenttoc055.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>68
    <FILENAME>ex101-fourthamendmenttoc056.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 68 - file: ex101-fourthamendmenttoc056.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>69
    <FILENAME>ex101-fourthamendmenttoc057.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 69 - file: ex101-fourthamendmenttoc057.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>70
    <FILENAME>ex101-fourthamendmenttoc058.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 70 - file: ex101-fourthamendmenttoc058.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>71
    <FILENAME>ex101-fourthamendmenttoc059.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 71 - file: ex101-fourthamendmenttoc059.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>72
    <FILENAME>ex101-fourthamendmenttoc060.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 72 - file: ex101-fourthamendmenttoc060.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>73
    <FILENAME>ex101-fourthamendmenttoc061.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 73 - file: ex101-fourthamendmenttoc061.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>74
    <FILENAME>ex101-fourthamendmenttoc062.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 74 - file: ex101-fourthamendmenttoc062.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>75
    <FILENAME>ex101-fourthamendmenttoc063.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 75 - file: ex101-fourthamendmenttoc063.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>76
    <FILENAME>ex101-fourthamendmenttoc064.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 76 - file: ex101-fourthamendmenttoc064.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>77
    <FILENAME>ex101-fourthamendmenttoc065.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 77 - file: ex101-fourthamendmenttoc065.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>78
    <FILENAME>ex101-fourthamendmenttoc066.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 78 - file: ex101-fourthamendmenttoc066.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>79
    <FILENAME>ex101-fourthamendmenttoc067.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 79 - file: ex101-fourthamendmenttoc067.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>80
    <FILENAME>ex101-fourthamendmenttoc068.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 80 - file: ex101-fourthamendmenttoc068.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>81
    <FILENAME>ex101-fourthamendmenttoc069.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 81 - file: ex101-fourthamendmenttoc069.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>82
    <FILENAME>ex101-fourthamendmenttoc070.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 82 - file: ex101-fourthamendmenttoc070.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>83
    <FILENAME>ex101-fourthamendmenttoc071.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 83 - file: ex101-fourthamendmenttoc071.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>84
    <FILENAME>ex101-fourthamendmenttoc072.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 84 - file: ex101-fourthamendmenttoc072.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>85
    <FILENAME>ex101-fourthamendmenttoc073.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 85 - file: ex101-fourthamendmenttoc073.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>86
    <FILENAME>ex101-fourthamendmenttoc074.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 86 - file: ex101-fourthamendmenttoc074.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>87
    <FILENAME>ex101-fourthamendmenttoc075.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 87 - file: ex101-fourthamendmenttoc075.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>88
    <FILENAME>ex101-fourthamendmenttoc076.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 88 - file: ex101-fourthamendmenttoc076.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>89
    <FILENAME>ex101-fourthamendmenttoc077.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 89 - file: ex101-fourthamendmenttoc077.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>90
    <FILENAME>ex101-fourthamendmenttoc078.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 90 - file: ex101-fourthamendmenttoc078.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>91
    <FILENAME>ex101-fourthamendmenttoc079.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 91 - file: ex101-fourthamendmenttoc079.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>92
    <FILENAME>ex101-fourthamendmenttoc080.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 92 - file: ex101-fourthamendmenttoc080.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>93
    <FILENAME>ex101-fourthamendmenttoc081.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 93 - file: ex101-fourthamendmenttoc081.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>94
    <FILENAME>ex101-fourthamendmenttoc082.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 94 - file: ex101-fourthamendmenttoc082.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>95
    <FILENAME>ex101-fourthamendmenttoc083.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 95 - file: ex101-fourthamendmenttoc083.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>96
    <FILENAME>ex101-fourthamendmenttoc084.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 96 - file: ex101-fourthamendmenttoc084.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>97
    <FILENAME>ex101-fourthamendmenttoc085.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 97 - file: ex101-fourthamendmenttoc085.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>98
    <FILENAME>ex101-fourthamendmenttoc086.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 98 - file: ex101-fourthamendmenttoc086.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>99
    <FILENAME>ex101-fourthamendmenttoc087.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 99 - file: ex101-fourthamendmenttoc087.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>100
    <FILENAME>ex101-fourthamendmenttoc088.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 100 - file: ex101-fourthamendmenttoc088.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>101
    <FILENAME>ex101-fourthamendmenttoc089.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 101 - file: ex101-fourthamendmenttoc089.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>102
    <FILENAME>ex101-fourthamendmenttoc090.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 102 - file: ex101-fourthamendmenttoc090.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>103
    <FILENAME>ex101-fourthamendmenttoc091.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 103 - file: ex101-fourthamendmenttoc091.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>104
    <FILENAME>ex101-fourthamendmenttoc092.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 104 - file: ex101-fourthamendmenttoc092.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>105
    <FILENAME>ex101-fourthamendmenttoc093.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 105 - file: ex101-fourthamendmenttoc093.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>106
    <FILENAME>ex101-fourthamendmenttoc094.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 106 - file: ex101-fourthamendmenttoc094.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>107
    <FILENAME>ex101-fourthamendmenttoc095.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 107 - file: ex101-fourthamendmenttoc095.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>108
    <FILENAME>ex101-fourthamendmenttoc096.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 108 - file: ex101-fourthamendmenttoc096.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>109
    <FILENAME>ex101-fourthamendmenttoc097.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 109 - file: ex101-fourthamendmenttoc097.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>110
    <FILENAME>ex101-fourthamendmenttoc098.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 110 - file: ex101-fourthamendmenttoc098.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>111
    <FILENAME>ex101-fourthamendmenttoc099.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 111 - file: ex101-fourthamendmenttoc099.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>112
    <FILENAME>ex101-fourthamendmenttoc100.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 112 - file: ex101-fourthamendmenttoc100.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>113
    <FILENAME>ex101-fourthamendmenttoc101.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 113 - file: ex101-fourthamendmenttoc101.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>114
    <FILENAME>ex101-fourthamendmenttoc102.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 114 - file: ex101-fourthamendmenttoc102.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>115
    <FILENAME>ex101-fourthamendmenttoc103.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 115 - file: ex101-fourthamendmenttoc103.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>116
    <FILENAME>ex101-fourthamendmenttoc104.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 116 - file: ex101-fourthamendmenttoc104.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>117
    <FILENAME>ex101-fourthamendmenttoc105.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 117 - file: ex101-fourthamendmenttoc105.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>118
    <FILENAME>ex101-fourthamendmenttoc106.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 118 - file: ex101-fourthamendmenttoc106.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>119
    <FILENAME>ex101-fourthamendmenttoc107.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 119 - file: ex101-fourthamendmenttoc107.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>120
    <FILENAME>ex101-fourthamendmenttoc108.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 120 - file: ex101-fourthamendmenttoc108.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>121
    <FILENAME>ex101-fourthamendmenttoc109.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 121 - file: ex101-fourthamendmenttoc109.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>122
    <FILENAME>ex101-fourthamendmenttoc110.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 122 - file: ex101-fourthamendmenttoc110.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>123
    <FILENAME>ex101-fourthamendmenttoc111.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 123 - file: ex101-fourthamendmenttoc111.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>124
    <FILENAME>ex101-fourthamendmenttoc112.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 124 - file: ex101-fourthamendmenttoc112.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>125
    <FILENAME>ex101-fourthamendmenttoc113.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 125 - file: ex101-fourthamendmenttoc113.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>126
    <FILENAME>ex101-fourthamendmenttoc114.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 126 - file: ex101-fourthamendmenttoc114.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>127
    <FILENAME>ex101-fourthamendmenttoc115.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 127 - file: ex101-fourthamendmenttoc115.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>128
    <FILENAME>ex101-fourthamendmenttoc116.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 128 - file: ex101-fourthamendmenttoc116.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>129
    <FILENAME>ex101-fourthamendmenttoc117.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 129 - file: ex101-fourthamendmenttoc117.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>130
    <FILENAME>ex101-fourthamendmenttoc118.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 130 - file: ex101-fourthamendmenttoc118.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>131
    <FILENAME>ex101-fourthamendmenttoc119.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 131 - file: ex101-fourthamendmenttoc119.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>132
    <FILENAME>ex101-fourthamendmenttoc120.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 132 - file: ex101-fourthamendmenttoc120.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>133
    <FILENAME>ex101-fourthamendmenttoc121.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 133 - file: ex101-fourthamendmenttoc121.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>134
    <FILENAME>ex101-fourthamendmenttoc122.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 134 - file: ex101-fourthamendmenttoc122.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>135
    <FILENAME>ex101-fourthamendmenttoc123.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 135 - file: ex101-fourthamendmenttoc123.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>136
    <FILENAME>ex101-fourthamendmenttoc124.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 136 - file: ex101-fourthamendmenttoc124.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>137
    <FILENAME>ex101-fourthamendmenttoc125.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 137 - file: ex101-fourthamendmenttoc125.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>138
    <FILENAME>ex101-fourthamendmenttoc126.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 138 - file: ex101-fourthamendmenttoc126.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>139
    <FILENAME>ex101-fourthamendmenttoc127.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 139 - file: ex101-fourthamendmenttoc127.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>140
    <FILENAME>ex101-fourthamendmenttoc128.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 140 - file: ex101-fourthamendmenttoc128.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>141
    <FILENAME>ex101-fourthamendmenttoc129.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 141 - file: ex101-fourthamendmenttoc129.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>142
    <FILENAME>ex101-fourthamendmenttoc130.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 142 - file: ex101-fourthamendmenttoc130.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>143
    <FILENAME>ex101-fourthamendmenttoc131.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 143 - file: ex101-fourthamendmenttoc131.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>144
    <FILENAME>ex101-fourthamendmenttoc132.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 144 - file: ex101-fourthamendmenttoc132.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>145
    <FILENAME>ex101-fourthamendmenttoc133.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 145 - file: ex101-fourthamendmenttoc133.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>146
    <FILENAME>ex101-fourthamendmenttoc134.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 146 - file: ex101-fourthamendmenttoc134.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>147
    <FILENAME>ex101-fourthamendmenttoc135.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 147 - file: ex101-fourthamendmenttoc135.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>148
    <FILENAME>ex101-fourthamendmenttoc136.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 148 - file: ex101-fourthamendmenttoc136.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>149
    <FILENAME>ex101-fourthamendmenttoc137.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 149 - file: ex101-fourthamendmenttoc137.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>150
    <FILENAME>ex101-fourthamendmenttoc138.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 150 - file: ex101-fourthamendmenttoc138.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>151
    <FILENAME>ex101-fourthamendmenttoc139.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 151 - file: ex101-fourthamendmenttoc139.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>152
    <FILENAME>ex101-fourthamendmenttoc140.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 152 - file: ex101-fourthamendmenttoc140.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>153
    <FILENAME>ex42-descriptionofsecuri001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 153 - file: ex42-descriptionofsecuri001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>154
    <FILENAME>ex42-descriptionofsecuri002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 154 - file: ex42-descriptionofsecuri002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>155
    <FILENAME>ex42-descriptionofsecuri003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 155 - file: ex42-descriptionofsecuri003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>156
    <FILENAME>strl-20230630_g1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 156 - file: strl-20230630_g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>157
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 157 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>158
    <FILENAME>R2.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 158 - file: R2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>159
    <FILENAME>R3.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 159 - file: R3.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>160
    <FILENAME>R4.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 160 - file: R4.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>161
    <FILENAME>R5.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 161 - file: R5.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>162
    <FILENAME>R6.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 162 - file: R6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>163
    <FILENAME>R7.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 163 - file: R7.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>164
    <FILENAME>R8.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 164 - file: R8.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>165
    <FILENAME>R9.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 165 - file: R9.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>166
    <FILENAME>R10.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 166 - file: R10.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>167
    <FILENAME>R11.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 167 - file: R11.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>168
    <FILENAME>R12.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 168 - file: R12.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>169
    <FILENAME>R13.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 169 - file: R13.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>170
    <FILENAME>R14.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 170 - file: R14.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>171
    <FILENAME>R15.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 171 - file: R15.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>172
    <FILENAME>R16.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 172 - file: R16.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>173
    <FILENAME>R17.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 173 - file: R17.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>174
    <FILENAME>R18.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 174 - file: R18.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>175
    <FILENAME>R19.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 175 - file: R19.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>176
    <FILENAME>R20.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 176 - file: R20.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>177
    <FILENAME>R21.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 177 - file: R21.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>178
    <FILENAME>R22.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 178 - file: R22.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>179
    <FILENAME>R23.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 179 - file: R23.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>180
    <FILENAME>R24.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 180 - file: R24.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>181
    <FILENAME>R25.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 181 - file: R25.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>182
    <FILENAME>R26.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 182 - file: R26.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>183
    <FILENAME>R27.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 183 - file: R27.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>184
    <FILENAME>R28.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 184 - file: R28.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>185
    <FILENAME>R29.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 185 - file: R29.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>186
    <FILENAME>R30.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 186 - file: R30.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>187
    <FILENAME>R31.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 187 - file: R31.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>188
    <FILENAME>R32.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 188 - file: R32.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>189
    <FILENAME>R33.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 189 - file: R33.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>190
    <FILENAME>R34.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 190 - file: R34.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>191
    <FILENAME>R35.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 191 - file: R35.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>192
    <FILENAME>R36.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 192 - file: R36.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>193
    <FILENAME>R37.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 193 - file: R37.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>194
    <FILENAME>R38.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 194 - file: R38.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>195
    <FILENAME>R39.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 195 - file: R39.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>196
    <FILENAME>R40.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 196 - file: R40.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>197
    <FILENAME>R41.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 197 - file: R41.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>198
    <FILENAME>R42.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 198 - file: R42.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>199
    <FILENAME>R43.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 199 - file: R43.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>200
    <FILENAME>R44.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 200 - file: R44.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>201
    <FILENAME>R45.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 201 - file: R45.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>202
    <FILENAME>R46.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 202 - file: R46.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>203
    <FILENAME>R47.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 203 - file: R47.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>204
    <FILENAME>R48.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 204 - file: R48.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>205
    <FILENAME>R49.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 205 - file: R49.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>206
    <FILENAME>R50.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 206 - file: R50.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>207
    <FILENAME>R51.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 207 - file: R51.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>208
    <FILENAME>R52.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 208 - file: R52.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>209
    <FILENAME>R53.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 209 - file: R53.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>210
    <FILENAME>R54.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 210 - file: R54.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>211
    <FILENAME>R55.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 211 - file: R55.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>212
    <FILENAME>R56.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 212 - file: R56.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>213
    <FILENAME>R57.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 213 - file: R57.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>214
    <FILENAME>R58.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 214 - file: R58.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>215
    <FILENAME>R59.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 215 - file: R59.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>216
    <FILENAME>R60.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 216 - file: R60.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>217
    <FILENAME>R61.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 217 - file: R61.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>218
    <FILENAME>R62.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 218 - file: R62.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>219
    <FILENAME>strl-20230630_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 219 - file: strl-20230630_htm.html

    Document 219 - RAW XML: strl-20230630_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>220
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 220 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>221
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 221 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>222
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 222 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>223
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 223 - file: FilingSummary.html

    Document 223 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>225
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 225 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>226
    <FILENAME>0000874238-23-000108-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 226 - file: 0000874238-23-000108-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>