Condensed Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Cash provided by operating activities - continuing operations	$ 3,805	$ 1,094
Cash used in operating activities - discontinued operations	(313)	(9,728)
Net cash provided by (used in) operating activities	3,492	(8,634)
Investing activities:
Purchases of investments	0	(140,464)
Proceeds from sale of investments	0	8,598
Proceeds from maturity of investments	80	69,963
Purchases of property, plant and equipment	(18)	(5)
Proceeds from sale of property, plant and equipment	0	283
Cash provided by investing activities - continuing operations	62	(61,625)
Cash provided by investing activities - discontinued operations	0	47,172
Net cash provided by (used in) investing activities	62	(14,453)
Financing activities:
Payment of withholding taxes on exercise of restricted stock units	0	(565)
Purchases of treasury stock	(19,853)	(690)
Cash used in financing activities - continuing operations	(19,853)	(1,255)
Cash used in financing activities - discontinued operations	0	(11,638)
Net cash used in financing activities	(19,853)	(12,893)
Decrease in cash and cash equivalents	(16,299)	(35,980)
Cash and cash equivalents, beginning of the period	37,128	60,980
Cash and cash equivalents, end of the period	20,829	25,000
Supplemental cash flow information:
Payments of federal and state income taxes	73	968
Non-cash investing and financing activities:
Fair value of common stock of Century received in the sale of UCP, Inc.	0	60,043
Non-cash distribution of debt and equity securities to deferred compensation plan participant	1,866	15,709
Issuance of common stock for vested restricted stock units	$ 263	$ 2,571