SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Movement in valuation and qualifying accounts
Balance at Beginning of Year	$ 17,108	$ 25,106	$ 25,317
Purchase Price Accounting	41,941
Charged to Costs and Expenses	5,312	1,305	2,978
Deductions	8,751	9,303	3,189
Balance at End of Year	55,610	17,108	25,106
Valuation allowance on foreign tax credit carryforwards
Movement in valuation and qualifying accounts
Balance at Beginning of Year	4,180	10,577	13,576
Deductions	4,180	6,397	2,999
Balance at End of Year		4,180	10,577
Valuation allowance on foreign net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,672	1,500	1,610
Purchase Price Accounting	41,941
Charged to Costs and Expenses	217	172
Deductions	1,922		110
Balance at End of Year	41,908	1,672	1,500
Valuation allowance on state net operating losses
Movement in valuation and qualifying accounts
Balance at Beginning of Year	1,962	1,687	1,126
Charged to Costs and Expenses		275	561
Deductions	1,409
Balance at End of Year	553	1,962	1,687
Allowance for doubtful accounts
Movement in valuation and qualifying accounts
Balance at Beginning of Year	9,294	11,342	9,005
Charged to Costs and Expenses	5,095	858	2,417
Deductions	1,240	2,906	80
Balance at End of Year	$ 13,149	$ 9,294	$ 11,342