Statement of Member's Equity (Unaudited) - USD ($) $ in Thousands	Total	MEMBER'S CAPITAL	RETAINED EARNINGS
Balance at beginning and end of period at Dec. 31, 2017		$ 1,073,892	$ 89,289
Net income	$ 38,795		38,795
Cash distributions to parent	(34,000)		(34,000)
Balance at end of period at Mar. 31, 2018	1,167,976		94,084
Balance at beginning and end of period at Dec. 31, 2018	1,120,642	$ 1,073,892	46,750
Net income	42,987		42,987
Cash distributions to parent	(21,000)		(21,000)
Balance at end of period at Mar. 31, 2019	$ 1,142,629		$ 68,737