Subsequent Event (Details) - USD ($)	Mar. 04, 2016	Mar. 10, 2016	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Term loan			$ 77,313,000	$ 82,687,000
Subsequent Event | 2016 Revolving Credit Facility
Line of Credit Facility [Line Items]
Long-term line of credit		$ 65,000,000.0
Subsequent Event | 2016 First-out Term Loan
Line of Credit Facility [Line Items]
Term loan		$ 45,000,000
Aluetian | Subsequent Event
Line of Credit Facility [Line Items]
Consideration transferred	$ 3,500,000