CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 4,344	$ 1,011
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	405	325
Stock-based compensation	619	445
Gain on sale of patent assets	(2,127)
Deferred tax provision on other comprehensive income	(44)
(Gain) loss on sale of investments	59	(27)
Loss on disposal of property and equipment		27
Amortization of premium/(discount) on investments	(1)	13
Changes in assets and liabilities:
Accounts receivable	632	703
Receivable from patent arrangement		1,121
Inventories	1,599
Prepaid expenses and other current assets	260	(565)
Deferred tax assets	202	185
Accounts payable	(1,337)	(85)
Accrued expenses, compensation, and professional	58	(261)
Accrued income taxes	57
Due to customers		3,732
Deferred revenue	832	(954)
Net cash provided by operating activities	5,558	5,670
Cash flows from investing activities:
Purchases of property and equipment	(112)	(117)
Proceeds from the sale of property and equipment		24
Purchases of investments		(2,008)
Sales of investments	1,432	1,064
Proceeds from sale of patent assets, net	2,127
Purchase of other assets		(201)
Net cash provided by (used in) investing activities	3,447	(1,238)
Cash flows from financing activities:
Proceeds from issuance of common stock	491	46
Payment of dividends	(39,905)
Excess tax benefits from stock-based compensation	1,461	(63)
Payments made for taxes of employees who surrendered shares related to unrestricted stock	(205)	(71)
Net cash used in financing activities	(38,158)	(88)
Increase/(decrease) in cash and cash equivalents	(29,153)	4,344
Cash and cash equivalents, beginning of period	72,660	71,074
Cash and cash equivalents, end of period	43,507	75,418
Supplemental disclosure:
Cash paid for income taxes	$ 617	$ 535