Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jul. 03, 2016	Dec. 31, 2015
Assets
Allowance for doubtful accounts	$ 2,118	$ 2,789
Accumulated depreciation	143,206	130,029
Accumulated amortization	$ 44,997	$ 36,849
Shareholders’ Equity:
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	70,000,000	70,000,000
Common stock, shares issued	41,016,000	40,855,000
Common stock, shares outstanding	41,016,000	40,855,000
Common stock, no par value	$ 0	$ 0