Goodwill and Intangible Assets - Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 81,021	$ 78,989	$ 84,089
Accumulated Amortization	25,821	21,960	20,739
Tradenames and trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	24,353	24,353	28,153
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	48,657	48,657	49,957
Accumulated Amortization	22,955	19,976	18,998
Favorable lease contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,882	3,882	3,882
Accumulated Amortization	837	299	120
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,435	403	403
Accumulated Amortization	572	393	384
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,164	1,164	1,164
Accumulated Amortization	1,027	941	913
Non-compete
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	530	530	530
Accumulated Amortization	$ 430	$ 351	$ 324