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Operating Leases - Narrative (Detail) (USD $) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2014 Location | Jun. 30, 2013 | Dec. 31, 2014 Full Year 2014
Operating Leased Assets [Line Items] |  |  |
Operating expenses |  | 9.80 | 10.12
Operating Leases, Future Minimum Payments Due | $ 6,619,000 |  |
Contractual Reimbursement of Future Minimum Lease Payments Expected Over Life of Operating Lease Agreement | $ 314,000 |  |
Number of office space locations | 3 |  |

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- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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