Cash Flow Information - Cash and Restricted Cash (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017
Cash and Cash Equivalents [Abstract]
Cash and cash equivalents	$ 10,416	$ 18,084			$ 89,213
Restricted cash included in other assets	12,226				15,110
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	$ 22,642	$ 32,445	$ 104,323	$ 33,953	$ 104,323
Additional cash and cash equivalent related text	Our restricted cash consists of cash held in escrow by banks for real estate taxes and other purposes.