Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 38,285	$ 40,979
Marketable securities	19,050	0
Trade receivables, net of allowances of $34 and $53	8,895	25,336
Inventories	23,229	15,824
Prepaids and other current assets	5,069	6,927
Income taxes receivable	73	80
Deferred income tax assets	6,204	4,441
Total current assets	100,805	93,587
Property, plant and equipment, net	8,680	8,499
Goodwill	2,746	2,740
Other intangible assets, net	11,595	12,615
Long-term deferred income tax assets	20,899	25,725
Other assets	311	401
Total assets	145,036	143,567
Liabilities and Shareholders' Equity
Trade payables	31,997	37,192
Accrued liabilities	8,122	9,123
Warranty obligations, current portion	2,075	1,610
Total current liabilities	42,194	47,925
Warranty obligations, non-current	0	28
Income taxes payable, non-current	3,533	2,577
Other long-term liabilities	1,232	1,472
Total liabilities	46,959	52,002
Commitments and contingencies (Note 12)
Shareholders' equity:
Common stock - no par value, 75,000 shares authorized, 31,278 and 31,162 shares issued and outstanding	7,348	6,769
Retained earnings	90,483	84,552
Accumulated other comprehensive income	246	244
Total shareholders' equity	98,077	91,565
Total liabilities and shareholders' equity	$ 145,036	$ 143,567