Long-term Debt, Line of Credit and Derivatives - Obligations under Debt Arrangements (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Principal, current	$ 26,969	$ 12,459
Principal	115,094	110,647
Deferred Issuance Costs, current	(844)	(455)
Deferred Issuance Costs	(3,602)	(4,038)
Net Value, current	26,125	12,004
Net Value, long-term	85,367	94,605
Total debt	111,492	106,609
Debt issuance cost	4,500
Debt related commitment fees and debt issuance costs	500
Revolving line of credit | Line of Credit
Debt Instrument [Line Items]
Principal, current	16,000	4,021
Deferred Issuance Costs, current	(501)	(147)
Net Value, current	15,499	3,874
Term loan - current | Loans Payable
Debt Instrument [Line Items]
Principal, current	10,969	8,438
Deferred Issuance Costs, current	(343)	(308)
Net Value, current	10,626	8,130
Term loan - long-term | Loans Payable
Debt Instrument [Line Items]
Principal, long-term	88,125	98,188
Deferred Issuance Costs, long-term	(2,758)	(3,583)
Net Value, long-term	85,367	94,605
Long-term Debt [Member] | Accounting Standards Update 2015-03 [Member]
Debt Instrument [Line Items]
Deferred Issuance Costs	(2,800)	(3,600)
Short-term Debt [Member] | Accounting Standards Update 2015-03 [Member]
Debt Instrument [Line Items]
Deferred Issuance Costs	$ (800)	$ (500)