XML 59 R5.htm IDEA: XBRL DOCUMENT
v3.19.3

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings (Accumulated Deficit) [Member] | Total
--- | --- | --- | --- | ---
Balance at Dec. 31, 2017 | $ 424 | $ 114,302 | $ 8,727 | $ 123,453
Balance (in shares) at Dec. 31, 2017 | 42,398,140 |  |  |
Issuance of common stock upon exercise of stock options and warrants | $ 0 | 17 | 0 | 17
Issuance of common stock upon exercise of stock options and warrants (in shares) | 5,000 |  |  |
Issuance of common stock for services | $ 2 | 346 | 0 | 348
Issuance of common stock for services (in shares) | 196,291 |  |  |
Value of share-based arrangements | $ 0 | 286 | 0 | 286
Value of share-based arrangements (in shares) | 0 |  |  |
Net loss | $ 0 | 0 | (47,552) | (47,552)
Balance at Sep. 30, 2018 | $ 426 | 114,951 | (38,825) | 76,552
Balance (in shares) at Sep. 30, 2018 | 42,599,431 |  |  |
Balance at Jun. 30, 2018 | $ 424 | 114,531 | (24,945) | 90,010
Balance (in shares) at Jun. 30, 2018 | 42,403,140 |  |  |
Issuance of common stock for services | $ 2 | 346 | 0 | 348
Issuance of common stock for services (in shares) | 196,291 |  |  |
Value of share-based arrangements | $ 0 | 74 | 0 | 74
Value of share-based arrangements (in shares) | 0 |  |  |
Net loss | $ 0 | 0 | (13,880) | (13,880)
Balance at Sep. 30, 2018 | $ 426 | 114,951 | (38,825) | 76,552
Balance (in shares) at Sep. 30, 2018 | 42,599,431 |  |  |
Balance at Dec. 31, 2018 | $ 426 | 115,719 | (46,932) | 69,213
Balance (in shares) at Dec. 31, 2018 | 42,602,431 |  |  |
Issuance of common stock upon exercise of stock options and warrants | $ 0 | 9 | 0 | 9
Issuance of common stock upon exercise of stock options and warrants (in shares) | 10,000 |  |  |
Issuance of common stock for services | $ 0 | 10 | 0 | 10
Issuance of common stock for services (in shares) | 16,129 |  |  |
Value of share-based arrangements | $ 0 | 890 | 0 | 890
Value of share-based arrangements (in shares) | 0 |  |  |
Net loss | $ 0 | 0 | (15,169) | (15,169)
Balance at Sep. 30, 2019 | $ 426 | 116,628 | (62,101) | 54,953
Balance (in shares) at Sep. 30, 2019 | 42,628,560 |  |  |
Balance at Jun. 30, 2019 | $ 426 | 116,356 | (64,768) | 52,014
Balance (in shares) at Jun. 30, 2019 | 42,612,431 |  |  |
Issuance of common stock for services | $ 0 | 10 | 0 | 10
Issuance of common stock for services (in shares) | 16,129 |  |  |
Value of share-based arrangements | $ 0 | 262 | 0 | 262
Net loss | 0 | 0 | 2,667 | 2,667
Balance at Sep. 30, 2019 | $ 426 | $ 116,628 | $ (62,101) | $ 54,953
Balance (in shares) at Sep. 30, 2019 | 42,628,560 |  |  |

X
- Definition Adjustments To Additional Paid In Capital Share Based Compensation Requisite Service Period Recognition Shares. + References No definition available. + Details
Name: | hdsn_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRequisiteServicePeriodRecognitionShares
Namespace Prefix: | hdsn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Issued During Period Shares Stock Options And Warrants Exercised. + References No definition available. + Details
Name: | hdsn_StockIssuedDuringPeriodSharesStockOptionSandWarrantsExercised
Namespace Prefix: | hdsn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Issued During Period Value Stock Options And Warrants Exercised. + References No definition available. + Details
Name: | hdsn_StockIssuedDuringPeriodValueStockOptionsAndWarrantsExercised
Namespace Prefix: | hdsn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118258462&loc=d3e11149-113907 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=118258462&loc=d3e11178-113907 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116855982&loc=d3e4534-113899 + Details
Name: | us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686 + Details
Name: | us-gaap_ProfitLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number of shares issued which are neither cancelled nor held in the treasury. + References No definition available. + Details
Name: | us-gaap_SharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_StockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant