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Secured Credit Facility and Other Debt - Long-term Debt (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Instrument [Line Items] |  |
Total debt | $ 94,457 | $ 98,950
Less - Current maturities of long-term debt | (1,057) | (3,978)
Less - Unamortized deferred loan costs | (8,294) | (8,812)
Total long-term debt | 85,106 | 86,160
Notes and deferred payments to sellers, Tealstone acquisition |  |
Debt Instrument [Line Items] |  |
Notes payable | 12,676 | 12,393
Notes payable for transportation and construction equipment and other |  |
Debt Instrument [Line Items] |  |
Notes payable | 1,460 | 1,557
Oaktree facility | Senior secured term loans | Equipment-based facility |  |
Debt Instrument [Line Items] |  |
Loans | $ 80,321 | $ 85,000

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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/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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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