CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities:
Net income	$ 55,789	$ 27,721	$ 17,835
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	4,435	4,209	5,405
Share-based compensation	3,124	4,267	3,428
Loss (gain) on sale of disposal of property, plant and equipment	48	94	(12)
Loss (gain) on sale of disposal of property, plant and equipment	3	82	(118)
Amortization of premium on investment securities	571	703	431
Deferred income taxes	(2,687)	(623)	(2,829)
Impairment of fixed assets			6,083
Changes in operating assets and liabilities:
Accounts receivable	122	815	246
Inventory	(18,658)	(1,017)	(4,976)
Income taxes, prepaid	2,272	(1,023)	300
Prepaid expenses and other current assets	(282)	(686)	(616)
Other assets	62	(1,958)	43
Accounts payable and accrued expenses	16,017	10,653	770
Net cash flow provided by operating activities- continuing operations	60,816	43,237	25,990
Net cash flow used in operating activities- discontinued operations			(640)
Net cash flow provided by operating activities	60,816	43,237	25,350
Investing Activities:
Sale of investment securities	3,545	6,954	26,741
Purchase of investment securities		(6,956)	(26,578)
Sale of property and equipment	196	81	676
Purchase of property and equipment	(4,940)	(3,242)	(2,876)
Net cash flow used in investing activities	(1,199)	(3,163)	(2,037)
Financing Activities:
Options exercised by executives and directors	547	568	299
Net shares repurchased for employee taxes	(720)	(2,540)	(1,342)
Excess tax benefits from share-based compensation			230
Cash dividends paid to stockholders	(23,160)	(15,390)	(11,889)
Stock repurchases	(29,995)
Repayment of capital leases			(219)
Net cash used in financing activities	(53,328)	(17,362)	(12,921)
Foreign currency impact	(2)	(71)	7
Increase in cash and cash equivalents	6,287	22,641	10,399
Cash and cash equivalents - beginning of the period	75,077	52,436	42,037
Cash and cash equivalents - end of period	81,364	75,077	52,436
Supplemental disclosure of cash flow information:
Income taxes paid	14,606	13,622	11,615
Dividends declared included in accounts payable	$ 9,137	$ 6,105	$ 4,039