CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Activities
Net income	$ 88,026	$ 40,412
Adjustments to reconcile net income to cash provided by operating activities
Depreciation and amortization	4,640	3,481
Share-based compensation	4,344	2,117
Amortization of premium on investment securities	49	182
Deferred income taxes		(764)
Change in operating assets and liabilities:
Inventories	(42,398)	10,191
Income taxes, prepaid		5,169
Prepaid expenses and other current assets	(4,657)	260
Other assets	(762)	(2,446)
Accounts payable and accrued expenses	36,962	25,651
Net cash flow provided by operating activities	86,204	84,253
Investing Activities
Sale and maturities of investment securities	5,145	1,000
Purchase of property and equipment	(12,196)	(583)
Net cash flow (used in) provided by investing activities	(7,051)	417
Financing Activities
Options exercised by executives and directors	702	1,250
Net shares repurchased for employee taxes	(1,833)	(496)
Cash dividends paid to stockholders	(30,095)	(26,568)
Stock repurchases	(19,730)	(5,000)
Net cash flow used in financing activities	(50,956)	(30,814)
Foreign currency impact	67	(2)
Increase in cash and cash equivalents	28,264	53,854
Cash and cash equivalents - beginning of the period	163,723	76,974
Cash and cash equivalents - end of the period	191,987	130,828
Supplemental disclosure of cash flow information:
Income taxes paid (received)	26,751	120
Dividends declared included in accounts payable	$ 17,531	$ 13,604