Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Name:	us-gaap_DividendsCommonStockCash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Common Stock (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
Common Stock (Narrative) (Details) - USD ($) $ in Thousands	Jan. 30, 2019	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Class of Stock [Line Items]
Dividends, Common Stock, Cash		$ 14,658	$ 13,615	$ 58,600	$ 54,300
Maximum
Class of Stock [Line Items]
Proceeds from issuance of common stock, requested	$ 200,000