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Accounts Receivable | 12 Months Ended
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Dec. 31, 2014
Receivables [Abstract] |
Loans, Notes, Trade and Other Receivables Disclosure [Text Block] | ## 3. Accounts Receivable Accounts receivable consisted of the following at December 31:
(in thousands) |  | 2014 |  | 2013
Contract receivables |  | $ | 120,295 |  |  | $ | 113,572 |
Contract retainages |  |  | 38,379 |  |  |  | 60,694 |
Other |  |  | 606 |  |  |  | 334 |
|  |  | 159,280 |  |  |  | 174,600 |
Less: Allowance for doubtful accounts |  |  | (1,179 | ) |  |  | (1,132 | )
|  | $ | 158,101 |  |  | $ | 173,468 |
The roll-forward of activity in the allowance for doubtful accounts was as follows for the years ended December 31:
(in thousands) |  | 2014 |  | 2013 |  | 2012
Balance at beginning of period |  | $ | 1,132 |  |  | $ | 1,305 |  |  | $ | 1,078 |
Less: Reduction in (provision for) allowances |  |  | (96 | ) |  |  | 159 |  |  |  | (383 | )
Less: Write offs, net of recoveries |  |  | 49 |  |  |  | 14 |  |  |  | 156 |
Balance at end of period |  | $ | 1,179 |  |  | $ | 1,132 |  |  | $ | 1,305 |

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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5066-111524 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Article 4 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5162-111524 + Details
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- Details
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