Condensed Consolidated Statements of Cash Flows (Parenthetical) - shares shares in Thousands	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015
Condensed Consolidated Statements of Cash Flows
Issuance of shares of common stock to fund the Company's 401(k) matching contribution	340,950	21,826

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration