Cash Dividend (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended
May 31, 2017	Dec. 23, 2017	Dec. 24, 2016
Cash Dividend [Abstract]
Common stock cash dividends per share declared	$ 0.18
Dividends to shareholders		$ 17,966	$ 16,874

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

Name:	us-gaap_PaymentsOfDividends
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration