Equity and Earnings per Share - Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
Feb. 15, 2017	Mar. 07, 2016	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Dividends declared (in dollars per share)	$ 0.04	$ 0.08
Dividends paid (in dollars per share)	$ 0.04	$ 0.08	$ 0.04	$ 0.08
Total payment	$ 688	$ 1,378	$ 688	$ 0

Aggregate dividends paid during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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- References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: 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=66902209&loc=d3e3291-108585

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