Equity Method Investment - Stock purchase agreement with Kleo (Details) $ / shares in Units, $ in Thousands			1 Months Ended	6 Months Ended		11 Months Ended
	Aug. 31, 2016 shares	Aug. 29, 2016 tranche director $ / shares shares	Oct. 31, 2017 USD ($) shares	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jan. 31, 2018 USD ($) shares	Mar. 31, 2017 USD ($) shares
Equity Method Investment
Cash payment for purchase of equity method investment | $				$ 1,375	$ 2,999
Kleo
Equity Method Investment
Shares to be purchased per stock purchase agreement		3,000,000
Additional shares to be purchased per stock purchase agreement		5,500,000
Price per share | $ / shares		$ 1.00
Shares of Kleo common stock purchased	3,000,000		2,049,543			5,500,000
Cash payment for purchase of equity method investment | $			$ 2,253	$ 1,375	$ 3,351	$ 5,500
Number of equal tranches of shares to be purchased | tranche		4
Shares to be purchased in equal tranches (shares)		1,375,000
Number to designate to Kleo's board of directors | director		2
Shares of Kleo common stock purchased from Chief Executive Officer							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)							32,500
Ownership percentage				46.60%