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Basis of Presentation and Significant Accounting Policies (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 USD ($) Customer | Jun. 30, 2014 Customer | Jun. 30, 2015 USD ($) Customer | Jun. 30, 2014 Customer | Dec. 31, 2014 USD ($) Customer
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Prepaid expenses and other current assets | $ 2,117 |  | $ 2,117 |  | $ 1,859 | [1]
Total current assets | 55,723 |  | 55,723 |  | 83,613 | [1]
Other assets | 665 |  | 665 |  | 669 | [1]
Total assets | 60,843 |  | 60,843 |  | 89,402 | [1]
Interest bearing obligations - current | 15,793 |  | 15,793 |  | 19,018 | [1]
Total current liabilities | 29,674 |  | 29,674 |  | 36,246 | [1]
Interest bearing obligations - long-term | 32,211 |  | 32,211 |  | 16,290 | [1]
Total liabilities | $ 92,129 |  | $ 92,129 |  | $ 86,303 | [1]
Customer Concentration Risk [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Number of major customers | Customer | 2 | 2 | 2 | 2 | 3 |
Prior to Adoption of ASU 2015-03 [Member] |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Prepaid expenses and other current assets | $ 2,305 |  | $ 2,305 |  | $ 2,088 |
Total current assets | 55,911 |  | 55,911 |  | 83,842 |
Other assets | 931 |  | 931 |  | 669 |
Total assets | 61,297 |  | 61,297 |  | 89,631 |
Interest bearing obligations - current | 15,981 |  | 15,981 |  | 19,247 |
Total current liabilities | 29,862 |  | 29,862 |  | 36,475 |
Interest bearing obligations - long-term | 32,477 |  | 32,477 |  | 16,290 |
Total liabilities | 92,583 |  | 92,583 |  | 86,532 |
ASU 2015-03 Adjustment [Member] |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Prepaid expenses and other current assets | (188) |  | (188) |  | (229) |
Total current assets | (188) |  | (188) |  | (229) |
Other assets | (266) |  | (266) |  | 0 |
Total assets | (454) |  | (454) |  | (229) |
Interest bearing obligations - current | (188) |  | (188) |  | (229) |
Total current liabilities | (188) |  | (188) |  | (229) |
Interest bearing obligations - long-term | (266) |  | (266) |  | 0 |
Total liabilities | (454) |  | (454) |  | (229) |
As Adopted [Member] |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |
Prepaid expenses and other current assets | 2,117 |  | 2,117 |  | 1,859 |
Total current assets | 55,723 |  | 55,723 |  | 83,613 |
Other assets | 665 |  | 665 |  | 669 |
Total assets | 60,843 |  | 60,843 |  | 89,402 |
Interest bearing obligations - current | 15,793 |  | 15,793 |  | 19,018 |
Total current liabilities | 29,674 |  | 29,674 |  | 36,246 |
Interest bearing obligations - long-term | 32,211 |  | 32,211 |  | 16,290 |
Total liabilities | $ 92,129 |  | $ 92,129 |  | $ 86,303 |
Revenues [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage (in hundredths) | 48.00% | 60.00% | 60.00% | 55.00% |  |
Revenues [Member] | Customer Concentration Risk [Member] | Customer 2 [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage (in hundredths) | 21.00% | 26.00% | 23.00% | 31.00% |  |
Trade and Other Receivables [Member] | Customer Concentration Risk [Member] | Customer 1 [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage (in hundredths) |  |  | 62.00% |  | 44.00% |
Trade and Other Receivables [Member] | Customer Concentration Risk [Member] | Customer 2 [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage (in hundredths) |  |  | 24.00% |  | 34.00% |
Trade and Other Receivables [Member] | Customer Concentration Risk [Member] | Customer 3 [Member] |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage (in hundredths) |  |  |  |  | 12.00% |
[1] | The condensed consolidated balance sheet as of December 31, 2014 has been derived from the audited consolidated financial statements as of that date included in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

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