SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets, Net, Noncurrent	$ 407
Deferred Tax Liabilities, Net, Noncurrent	$ 46,622	$ 45,406
Accounting Standards Update 2015-17
Deferred Tax Assets, Net, Current		(3,900)
Deferred Tax Assets, Net, Noncurrent		3,900
Deferred Tax Liabilities, Net, Current		(200)
Deferred Tax Liabilities, Net, Noncurrent		$ 200