Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 18,694		$ 13,266
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	7,747		7,935
Accounts Receivable, Credit Loss Expense (Reversal)	0		105
Bad debt expense	148		0
Stock-based compensation	9,997		8,445
Amortization of accretion of discounts on marketable securities	(64)		(580)
Deferred income taxes	1,784		1,643
Changes in operating assets and liabilities:
Accounts receivable	5,190		7,962
Prepaid expenses and other assets	(1,629)		(3,205)
Accounts payable	(262)		(1,374)
Accrued liabilities	253		332
Deferred revenues	10,577		9,855
Other non-current liabilities	0		(37)
Net cash provided by operating activities	52,435		44,347
Cash flows from investing activities:
Purchases of marketable securities	(85,567)		(66,224)
Sales and maturities of marketable securities	129,651		91,046
Purchases of property and equipment	(7,271)		(8,608)
Business combinations	0		(850)
Payments to Acquire Investments		$ 600
Net cash provided by investing activities	36,813		15,364
Cash flows from financing activities:
Proceeds from exercise of stock options	4,714		4,047
Payments for taxes related to net share settlement of equity awards	(5,000)		(3,367)
Principal payments under finance lease obligations	(30)		(419)
Repurchase of common stock	(28,926)		(7,871)
Net cash used in financing activities	(29,242)		(7,610)
Net increase in cash, cash equivalents and restricted cash	60,006		52,101
Cash, cash equivalents and restricted cash at beginning of period	88,759	$ 94,327	42,226
Cash, cash equivalents and restricted cash at end of period	$ 148,765		$ 94,327