Organization - Public Offerings (Details) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended
	Apr. 26, 2016 USD ($) $ / shares shares	Mar. 29, 2016 $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Mar. 31, 2019 subsidiary	Mar. 31, 2018 USD ($) $ / shares
Public Offerings
Number of insignificant subsidiaries | subsidiary				4
Proceeds from sale of stock | $					$ 64,877
IPO
Public Offerings
Shares Issued, Price Per Share | $ / shares		$ 15.00
Issuance of stock (in shares) | shares		4,700,000
Net proceeds from IPO | $	$ 70,600
Over-Allotment Option
Public Offerings
Shares Issued, Price Per Share | $ / shares	$ 15.00
Issuance of stock (in shares) | shares	502,618		1,058,823
FPO
Public Offerings
Shares Issued, Price Per Share | $ / shares			$ 8.50		$ 8.50
Issuance of stock (in shares) | shares			8,117,647
Proceeds from sale of stock | $			$ 64,900