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Shareholders' Equity (Schedule of Activity in Options and Warrants) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Employee Stock Option [Member] |  |  |  |
Number of Shares Underlying Warrants and Options |  |  |  |
Balance | 1,117,899 | 1,269,649 | 1,734,199 |
Granted/Issued | 499,700 |  |  |
Cancelled/Terminated | (64,500) | (151,750) | (379,550) |
Exercised | (72,500) |  | (85,000) |
Balance | 1,480,599 | 1,117,899 | 1,269,649 | 1,734,199
Weighted Average Exercise Price |  |  |  |
Balance | $ 9.03 | $ 9.48 | $ 11.64 |
Granted/Issued | $ 5.26 |  |  |
Cancelled/Terminated | $ 12.81 | $ 12.76 | $ 20.43 |
Exercised | $ 4.83 |  | $ 3.72 |
Balance | $ 7.80 | $ 9.03 | $ 9.48 | $ 11.64
Weighted Average Remaining Contractual Term (Years) | 5 years 2 months 12 days | 3 years 8 months 12 days | 4 years 2 months 12 days | 4 years 3 months 18 days
Aggregate Intrinsic Value | $ 399,000 | $ 4,250 |  | $ 281,600
Non-Employee Stock Options and Warrants [Member] |  |  |  |
Number of Shares Underlying Warrants and Options |  |  |  |
Balance | 1,512,103 | 704,257 | 708,909 |
Granted/Issued |  | 807,846 |  |
Cancelled/Terminated | (25,000) |  |  |
Exercised | (107,483) |  | (4,652) |
Balance | 1,379,620 | 1,512,103 | 704,257 |
Weighted Average Exercise Price |  |  |  |
Balance | $ 5.56 |  |  |
Granted/Issued |  | $ 5.12 |  |
Cancelled/Terminated | $ 9.00 |  |  |
Exercised | $ 4.45 |  | $ 5.64 |
Balance | $ 5.58 | $ 5.56 |  |
Non-Employee Stock Options and Warrants [Member] | Minimum [Member] |  |  |  |
Weighted Average Exercise Price |  |  |  |
Balance |  |  | $ 5.00 | $ 5.00
Non-Employee Stock Options and Warrants [Member] | Maximum [Member] |  |  |  |
Weighted Average Exercise Price |  |  |  |
Balance |  |  | $ 9.00 | $ 9.00

X
- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(iv)(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References 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 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References 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 + Details
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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 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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