Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016
OPERATING ACTIVITIES
Net income		$ 380	$ 14,891
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		18,481	19,186
Interest accretion of convertible notes discount		6,619	6,118
Employee share-based compensation expense		7,986	7,188
Financing costs amortization		642	642
Unrealized foreign currency transaction loss		258	349
Other non-cash operating activities		(268)	1,054
Changes in assets and liabilities, net of acquisitions:
Accounts receivable		(5,847)	32,529
Inventory		(17,357)	7,052
Unbilled contract revenues and other assets		6,235	30,312
Accounts payable and other liabilities		(16,587)	(39,907)
Customer advances and billings in excess of contract revenue		(3,429)	7,415
Net Cash (Used In) Provided By Operating Activities		(2,887)	86,829
INVESTING ACTIVITIES
Capital expenditures		(16,757)	(9,418)
Proceeds from Sales of Assets, Investing Activities		740	0
Government grants		276	612
Acquisition of businesses, net of cash acquired		(23,162)	(1,383)
Net Cash Used In Investing Activities		(38,903)	(10,189)
FINANCING ACTIVITIES
Borrowings on revolving credit facilities		2,176	3,820
Repayments on revolving credit facilities		(5,097)	(3,816)
Borrowings on term loan		0	13,167
Repayments on term loan		0	1,508
Proceeds from exercise of options		861	17
Excess tax benefits from share-based compensation		0	54
Common stock repurchases		(1,843)	(643)
Net Cash (Used In) Provided By Financing Activities		(3,903)	11,091
Effect of exchange rate changes on cash		3,610	1,719
Net (decrease) increase in cash, cash equivalents, restricted cash, and restricted cash equivalents		(42,083)	89,450
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents at Beginning of Period	[1]	282,949	123,708
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents at End of Period	[2]	$ 240,866	$ 213,158

[1] (1) Includes restricted cash of $990 at January 1, 2017 in other assets and no restricted cash at January 1, 2016.

[2] (2) Includes restricted cash of $6,439 ($5,445 in other current assets and $994 in other assets) at June 30, 2017 and no restricted cash at June 30, 2016.