BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 43,077	$ 59,173
Accounts Receivable, Net, Current	63,889	55,815
Inventory, Net	78,596	77,084
Other	10,944	10,398
Total current assets	196,506	202,470
Property, Plant and Equipment, Net	64,407	65,515
Intangible Assets, Net (Excluding Goodwill)	87,485	90,336
Goodwill	118,145	118,145
Operating Lease, Right-of-Use Asset	20,487	20,439
Deferred Income Tax Assets, Net	26,657	27,702
Other Assets, Noncurrent	18,236	19,122
Total assets	531,923	543,729
Current liabilities:
Accounts payable	13,236	17,983
Accrued Liabilities, Current	26,751	31,872
Short-term unearned revenue	9,084	8,214
Total current liabilities	49,071	58,069
Long-term unearned revenue	1,606	1,633
Operating Lease, Liability, Noncurrent	16,748	17,182
Other long-term liabilities	1,992	1,985
Total liabilities	69,417	78,869
Stockholders' Equity Attributable to Parent [Abstract]
Common Stock, Value, Outstanding	45	44
Preferred Stock, Value, Outstanding	0	0
Additional Paid in Capital	381,501	380,304
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,443)	(1,380)
Retained earnings	82,403	85,892
Stockholders' Equity Attributable to Parent	462,506	464,860
Liabilities and Equity	$ 531,923	$ 543,729