Accounts Receivable Securitization (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
ACCOUNTS RECEIVABLE SECURITIZATION: [Abstract]
Letters of Credit Outstanding, Amount			$ 60,230
Subordinated Debt			17,570
Costs associated with the receivables facility	$ (3,000)	$ (432)	(892)	$ (1,737)
Eligible accounts receivable			$ 77,800