Common Shares (Details)	1 Months Ended	3 Months Ended
	Feb. 29, 2016 USD ($) $ / shares shares	Mar. 31, 2017 USD ($) Vote $ / shares shares	Jul. 31, 2016 USD ($) $ / shares shares	Mar. 31, 2016 USD ($)	May 11, 2017 shares	Apr. 30, 2017 shares	Apr. 21, 2017 shares	Dec. 31, 2016 $ / shares shares
Number of shares authorized | shares		38,000,000						38,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0						$ 0
Number of votes | Vote		1
Dividends declared		$ 0
Issuance of common shares | shares	429,000		1,090,500
Issuance price per share | $ / shares	$ 7.00		$ 7.70
Proceeds from issuance of common shares	$ 2,980,000		$ 8,299,000	$ 3,003,000
Issuance costs	$ 23,000	2,049,000	$ 97,000	$ 23,000
Put option
Fair value of put option		$ 0
Subsequent Event
Number of shares authorized | shares					200,000,000	50,000,000	50,000,000