Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 25,929	$ 27,893
Available-for-sale securities	59,987	57,303
Trade receivables, net of allowances of $54 and $119	25,275	42,685
Inventories	42,262	53,354
Prepaids and other current assets	12,342	7,257
Total current assets	165,795	188,492
Property, plant and equipment, net	17,792	15,827
Goodwill	61,928	62,030
Other intangible assets, net	56,149	57,743
Deferred income tax assets, non-current	78	0
Other assets	614	684
Total assets	302,356	324,776
Liabilities and Shareholders' Equity
Trade payables	46,633	66,899
Accrued liabilities	9,194	10,764
Warranty obligations, current portion	3,915	3,718
Note payable, current portion, net of unamortized debt issuance costs of $7 and $7	15,993	15,993
Total current liabilities	75,735	97,374
Warranty obligations, non-current	1,787	2,399
Income taxes payable, non-current	3,186	2,955
Deferred income tax liabilities, non-current	9,978	8,558
Other non-current liabilities	2,091	2,315
Note payable, non-current, net of unamortized debt issuance costs of $11 and $14	23,989	31,986
Total liabilities	116,766	145,587
Commitments and contingencies (Note 14)
Shareholders' equity:
Common stock - no par value, 75,000 shares authorized, 30,237 and 30,305 shares issued and outstanding	462	0
Retained earnings	185,689	179,448
Accumulated other comprehensive loss	(561)	(259)
Total shareholders' equity	185,590	179,189
Total liabilities and shareholders' equity	$ 302,356	$ 324,776