Date the equity-based award expires, in CCYY-MM-DD format.

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

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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

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Number of options outstanding, including both vested and non-vested options.

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

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

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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

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Stock Options, Stock Appreciation Rights and Warrants (Details 2) - $ / shares			6 Months Ended
	Jan. 05, 2015	Dec. 13, 2014	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			4,724,000
Expiration Date	Dec. 31, 2016	Dec. 31, 2015
Stock Options [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			4,724,000	4,728,000	3,273,000	3,275,000
Number Exercisable			4,724,000		3,273,000
Stock Options Outstanding, Exercise Price			$ 1.98	$ 1.98	$ 1.97	$ 1.97
Stock Options [Member] \| Year Granted 2007 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			160,000
Number Exercisable			160,000
Stock Options Outstanding, Exercise Price			$ 1.25
Expiration Date			Mar. 31, 2017
Stock Options [Member] \| Year Granted 2008 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			150,000
Number Exercisable			150,000
Stock Options Outstanding, Exercise Price			$ 2.60
Expiration Date			Sep. 23, 2018
Stock Options [Member] \| Year Granted 2012 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			1,965,000
Number Exercisable			1,965,000
Stock Options Outstanding, Exercise Price			$ 1.70
Expiration Date			Dec. 31, 2016
Stock Options [Member] \| Year Granted 2012 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			2,000
Number Exercisable			2,000
Stock Options Outstanding, Exercise Price			$ 1.70
Expiration Date			Apr. 12, 2017
Stock Options [Member] \| Year Granted 2013 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			2,000
Number Exercisable			2,000
Stock Options Outstanding, Exercise Price			$ 1.38
Expiration Date			Jan. 14, 2018
Stock Options [Member] \| Year Granted 2014 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			40,000
Number Exercisable			40,000
Stock Options Outstanding, Exercise Price			$ 1.80
Expiration Date			Mar. 27, 2019
Stock Options [Member] \| Year Granted 2014 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			950,000
Number Exercisable			950,000
Stock Options Outstanding, Exercise Price			$ 2.55
Expiration Date			Dec. 31, 2016
Stock Options [Member] \| Year Granted 2015 [Member] \| 2003 Plan and 2014 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number Outstanding			1,455,000
Number Exercisable			1,455,000
Stock Options Outstanding, Exercise Price			$ 2.00
Expiration Date			Dec. 31, 2017