v3.5.0.1

Business Segment Information (Geographic Data) (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2016 USD ($) geographic_area	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)
Geographic Data
Number of geographic areas the Company operates in | geographic_area									2
Operating revenues	$ 49,857	$ 55,144	$ 61,932	$ 56,108	$ 60,225	$ 60,145	$ 61,472	$ 63,338	$ 223,041	$ 245,180	$ 287,346
Assets	421,717				466,025				421,717	466,025
United States of America
Geographic Data
Operating revenues									217,349	234,554	275,161
Assets	415,422				458,197				415,422	458,197
Europe
Geographic Data
Operating revenues									5,692	10,626	$ 12,185
Assets	$ 6,295				$ 7,828				$ 6,295	$ 7,828

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- Definition

Number of Geographic Areas in which Entity Operates

+ References

No definition available.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.18)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 12
-Article 7

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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