Sale of Receivables (Details)	9 Months Ended		12 Months Ended
	Dec. 31, 2015 USD ($) program	Dec. 31, 2014 USD ($)	Mar. 31, 2015 USD ($)	Jun. 29, 2015 USD ($)
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets [Line Items]
Number of accounts receivable securitization programs | program	3
Receivables sold, face value discounted, percentage	100.00%
Reductions of trade and other receivables due to settlements	$ 14,309,000		$ 20,396,000
Increase of trade and other receivables due to settlements		$ 7,440,000
Receivables outstanding in facility	97,974,000	80,622,000	235,162,000
Beneficial interest	20,796,000	27,221,000	40,712,000
Servicing liability	21,000	21,000	131,000
Cash purchase price	338,214,000	299,243,000	622,844,000
Deferred purchase price	169,777,000	140,871,000	229,573,000
Service fees	425,000	460,000	589,000
Total	508,416,000	$ 440,574,000	$ 853,006,000
Accounts Receivable Securitization, Program One [Member]
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets [Line Items]
Trade receivables sold, maximum amount	$ 150,000			$ 250,000
Service fee percentage	0.50%
Accounts Receivable Securitization, Program Two [Member]
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets [Line Items]
Trade receivables sold, maximum amount	$ 35,000,000
Asset Backed Securities Programs Number Three [Member]
Derecognized Assets, Securitized or Asset-backed Financing Arrangement Assets [Line Items]
Trade receivables sold, maximum amount	$ 100,000,000