Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (4,544)	$ 4,679
Loss from discontinued operations, net of tax	1,713	870
Income (loss) from continuing operations	(2,831)	5,549
Adjustments to reconcile net income (loss) from continuing operations to net cash provided by operating activities:
Depreciation and amortization	2,448	2,107
Impariment loss	3,765
Equity in loss of partnerships	206	300
Stock-based compensation	1,514	1,025
Change in allowance for doubtful accounts	(501)	368
Changes in operating assets and liabilities:
Accounts receivable	3,394	(5,110)
Inventories	110	(4,856)
Contract assets	(2,889)	(3,345)
Other assets	(165)	(391)
Accounts payable	(1,773)	2,722
Accrued expenses	(1,372)	49
Other liabilities	(123)	(146)
Net cash provided by (used in) operating activities of continuing operations	1,783	(1,728)
Net cash (used in) operating activities of discontinued operations	(24)	(984)
Net cash provided by (used in) operating activities	1,759	(2,712)
Cash flows from investing activities:
Purchases of machinery and equipment	(3,787)	(3,496)
Payments for acquistion of other assets	(696)
Purchase of investment securities	(40,590)
Proceeds from sale of investment securities	38,015
Proceeds from maturities of investment securities	6,425
Investment in partnerships	(296)	(843)
Net cash (used in) investing activities of continuing operations	(929)	(4,339)
Net cash (used in) investing activities of discontinued operations	(16)
Net cash (used in) investing activities	(945)	(4,339)
Cash flows from financing activities:
Proceeds from long-term debt		14,195
Repayments of long-term debt		(25,539)
Proceeds from issuance of common stock, net of costs		88,967
Payments for repurchase of common stock and related costs		(25,907)
Payment of financing leases	(82)
Exercise of stock options and employee stock purchase plan shares	263	584
Withholding of common stock upon vesting of restricted stock units	(304)
Net cash provided by (used in) financing activities	(123)	52,300
Effect of exchange rate changes on cash of continuing operations	(46)	(24)
Effect of exchange rate changes on cash of discontinued operations	(4)	(2)
Effect of exchange rate changes on cash	(50)	(26)
Net increase in cash	641	45,223
Cash, cash equivalents and restricted cash, beginning of period	8,047	1,017
Cash, cash equivalents and restricted cash, end of period	8,688	46,240
Non-cash investing and financing:
Acquisition of machinery and equipment in accounts payable	305	2,098
Investment in partnership through liability incurred		$ 86
Fitting software other asset through liabilities incurred and exchange of investment in partnership	$ 3,093