Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 81,157	$ 39,572
Restricted cash		14,369
Trade accounts receivable, less allowances of $8,405 and $8,396 at December 31, 2017 and 2016, respectively	63,437	57,848
Inventories	81,330	63,346
Prepaid expenses and other current assets	25,877	19,238
Total current assets	251,801	194,373
Property, plant and equipment, net	45,139	48,916
Patents and other intangible assets, net	10,461	7,461
Goodwill	53,565	53,565
Deferred income taxes	23,315	47,325
Other long-term assets	21,073	20,463
Total assets	405,354	372,103
Current liabilities
Trade accounts payable	18,111	14,353
Other current liabilities	61,295	69,088
Total current liabilities	79,406	83,441
Other long-term liabilities	29,340	25,185
Total liabilities	108,746	108,626
Contingencies (Note 11)
Shareholders’ equity
Common shares $0.10 par value; 50,000,000 shares authorized; 18,278,833 and 17,828,155 issued and outstanding as of December 31, 2017 and 2016, respectively	1,828	1,783
Additional paid-in capital	220,591	204,095
Retained earnings	70,402	64,179
Accumulated other comprehensive income (loss)	3,787	(6,580)
Total shareholders’ equity	296,608	263,477
Total liabilities and shareholders’ equity	$ 405,354	$ 372,103