Long-Term Debt, Summary of Long-term Debt, Net of Unamortized Deferred Loan Costs (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Debt, Long-term and Short-term, Combined Amount [Abstract]
Long-term debt, gross	$ 209,069	$ 212,629
Less: deferred loan costs	(1,771)	(2,286)
Total debt including debt held for sale as discontinued operations	207,298	210,343
Less: current portion	(147,102)	(46,046)
Long-term debt, excluding current portion	60,196	164,297
Cash Convertible Notes, Net of Unamortized Discount [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Long-term debt, gross		137,859
Prior Credit Agreement [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Long-term debt, gross	139,790
Prior Credit Agreement [Member] | Term Loan [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Long-term debt, gross	55,000	60,000
Prior Credit Agreement [Member] | Revolver [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Long-term debt, gross	13,250	13,500
Capital Lease Obligations and Other [Member]
Debt, Long-term and Short-term, Combined Amount [Abstract]
Long-term debt, gross	$ 1,029	$ 1,270