Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Amortized intangible assets
Original Cost	$ 169,456	$ 103,708
Accumulated Amortization	49,216	37,166
Net Book Value	120,240	66,542
Customer list
Amortized intangible assets
Original Cost	42,561	21,757
Accumulated Amortization	12,130	10,374
Net Book Value	30,431	11,383
Non-compete agreement
Amortized intangible assets
Original Cost	4,594	3,502
Accumulated Amortization	2,517	2,187
Net Book Value	2,077	1,315
Supply agreement
Amortized intangible assets
Original Cost	9,806	9,806
Accumulated Amortization	3,955	3,082
Net Book Value	5,851	6,724
Technology
Amortized intangible assets
Original Cost	15,500	2,100
Accumulated Amortization	2,483	1,225
Net Book Value	13,017	875
Trademarks and patents
Amortized intangible assets
Original Cost	18,717	3,218
Accumulated Amortization	2,273	876
Net Book Value	16,444	2,342
Lease intangible
Amortized intangible assets
Original Cost	5,479	5,985
Accumulated Amortization	4,586	4,422
Net Book Value	893	1,563
Software
Amortized intangible assets
Original Cost	70,846	55,436
Accumulated Amortization	19,508	13,305
Net Book Value	51,338	42,131
Other
Amortized intangible assets
Original Cost	1,953	1,904
Accumulated Amortization	1,764	1,695
Net Book Value	$ 189	$ 209