Commitments and Contingencies - Operating Lease - General Information (Details)	1 Months Ended
	May 31, 2017 ft² agreement	Jun. 30, 2017 ft²	Mar. 31, 2016 ft²	Mar. 31, 2014 ft²
Office space in Dallas, Texas
Operating Leases
Approximate size of leased space (in square feet)				2,418
Facility for corporate headquarters Bannockburn, Illinois
Operating Leases
Approximate size of leased space (in square feet)		15,668
Facility in Columbus, Ohio
Operating Leases
Approximate size of leased space (in square feet)		1,318
Office space in Libertyville, Illinois
Operating Leases
Additional square feet of leased space (in square feet)	4,582
Number of month-to-month lease agreements for additional space | agreement	2
Office and warehouse space in Libertyville, Illinois
Operating Leases
Approximate size of leased space (in square feet)			48,529