Consolidated Statements of Operations and Comprehensive Income (Parenthetical) (Unaudited) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Interest expense related parties	$ 0	$ 2,079,000

Amount of interest expense incurred on a debt or other obligation to related party.

No definition available.

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