Fair Value - Debt and Capital Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current portion, Recorded Amount	$ 14,704	$ 15,832
Capital leases, including current portion, Recorded Amount	16,341	16,529
Total, Recorded Amount	31,045	32,361
Total, Fair Value	24,061	24,064
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current portion, Fair Value	13,676	14,024
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Capital lease obligations, including current portion, Fair Value	$ 10,385	$ 10,040