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Supplemental Cash Flow Disclosure (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Debt Conversion [Line Items] |  |  |  |
Interest paid |  | $ 5,300 | $ 3,919 |
Income taxes paid |  | 36 | 47 |
Income tax refunds |  | 8 | 83 |
Legal and financial advisory fees | $ 24 | 72 |  |
8.00% Contingent Convertible Senior Notes Due 2022 [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Debt Instrument, Fee Amount |  |  | 600 |
Discount on debt | 600 | 600 | 600 |
Additional paid-in capital [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Redemption of non-controlling interest, net |  | (139) | 153 |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Redemption of non-controlling interest, net |  | 14 | (14) |
Non-controlling Interest [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Redemption of non-controlling interest, net |  | 125 | (139) |
Daniel G. Cohen [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Legal and financial advisory fees |  |  | $ 600 |
Contingent Convertible Senior Notes [Member] | 8.00% Contingent Convertible Senior Notes Due 2022 [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Principal amount of debt outstanding | $ 15,000 | 15,000 |  | $ 15,000
Daniel G. Cohen [Member] |  |  |  |
Debt Conversion [Line Items] |  |  |  |
Legal and financial advisory fees |  | $ 600 |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 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(22)) -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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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