Fair Value Measurements Financial Instruments that were not Measured at Fair Value (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Second Lien Term Loan [Member] | Reported Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Long-term Debt	$ 29,214	$ 28,989
Second Lien Term Loan [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value	30,600	29,900
Convertible Notes, Net [Member] | Reported Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Long-term Debt	19,229	17,947
Convertible Notes, Net [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value	23,250	19,200
First Lien Loan Agreement | Reported Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Long-term Debt	8,000	3,500
First Lien Loan Agreement | Estimate of Fair Value Measurement [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Fair value	$ 8,000	$ 3,500