Derivatives and Hedging (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Balance Sheet Hedges Cover Currency Exposures in Notional Amounts

These balance sheet hedges cover currency exposures in the following line items in the notional amounts indicated (in thousands):

	March 31,		December 31,
Balance sheet categories	2018		2017
Accounts Receivable	$	52,130	$	44,427
Other assets and liabilities, net		34,109		46,550
Intercompany balances		157,247		144,477
Total	$	243,486	$	235,454