CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash provided by (used for) operating activities:
Net income	$ 4,803	$ 9,341
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	15,954	12,032
Provision for doubtful accounts	81	116
Provision for inventory write-downs	1,419	1,705
Deferred income taxes	(1,035)	165
Tax benefit from exercise of stock options and vested restricted stock	0	992
Excess tax benefit from stock-based compensation	0	(1,047)
Shares issued for employee benefit plan	591	551
Employee and director stock-based compensation	5,555	4,970
Performance-based common stock warrants	1,263	2,058
Changes in operating assets and liabilities:
Restricted cash	4,623	0
Accounts receivable	(20,427)	(9,599)
Inventories	(11,249)	982
Prepaid expenses and other assets	(121)	(243)
Accounts payable and accrued expenses	(15)	4,488
Accrued income taxes	(1,691)	(3,260)
Net cash provided by (used for) operating activities	(249)	23,251
Cash used for investing activities:
Acquisition of property, plant, and equipment	(17,519)	(17,989)
Acquisition of net assets of Residential Control Systems, Inc.	(8,854)	0
Acquisition of intangible assets	(765)	(993)
Deconsolidation of Encore Controls LLC	0	48
Net cash used for investing activities	(27,138)	(18,934)
Cash provided by (used for) financing activities:
Borrowings under line of credit	85,000	57,987
Repayments on line of credit	(42,987)	(65,000)
Proceeds from stock options exercised	842	2,536
Treasury stock purchased	(14,885)	(1,944)
Excess tax benefit from stock-based compensation	0	1,047
Net cash provided by (used for) financing activities	27,970	(5,374)
Effect of exchange rate changes on cash	(1,499)	(2,464)
Net increase (decrease) in cash and cash equivalents	(916)	(3,521)
Cash and cash equivalents at beginning of year	50,611	52,966
Cash and cash equivalents at end of period	49,695	49,445
Supplemental cash flow information:
Income taxes paid	4,142	4,647
Interest paid	$ 981	$ 609