Equity Method Investment - Stock purchase agreement with Kleo (Details) $ / shares in Units, $ in Thousands			3 Months Ended
	Mar. 30, 2017 USD ($) $ / shares shares	Aug. 29, 2016 director tranche $ / shares shares	Mar. 31, 2017 USD ($) shares	Dec. 31, 2016
Equity Method Investment
Cash payment for purchase of equity method investment			$ 1,624
Common stock value for purchase of kleo office stock holder stock			352
Proportionate share of net loss in Kleo			$ 218
Common Shares
Equity Method Investment
Stock Issued During the Period Shares Equity Method Investments | shares			32,500
Common stock value for purchase of kleo office stock holder stock			$ 352
Kleo
Equity Method Investment
Shares of Kleo common stock purchased | shares		3,000,000
Additional shares of Kleo common stock purchased | shares		5,500,000	1,875,000
Price per share | $ / shares		$ 1.00
Number of equal tranches of shares to be purchased | tranche		4
Shares purchased in equal tranches | shares		1,375,000	1,375,000
Period of time shares begin to be purchased in equal tranches after the initial closing		6 months
Period of time shares are purchased after the initial purchase		3 months
Cash payment for purchase of equity method investment			$ 1,976
Shares of Kleo common stock purchased from Chief Executive Officer | shares		500,000
Cash payment for purchase of Kleo officer and stockholder shares	$ 250
Issuance of common shares for purchase of Kleo office and stockholder shares (in shares) | shares	32,500
Fair value of share price | $ / shares	$ 10.82
Common stock value for purchase of kleo office stock holder stock	$ 352
Number to designate to Kleo's board of directors | director		2
Ownership percentage			27.90%	18.60%
Total number of directors on Kleo's board of directors | director		5
Proportionate share of net loss in Kleo			$ 218