General form of registration statement for all companies including face-amount certificate companies

Property and equipment - Summary of Property and Equipment (Details)

v2.4.0.8
Property and equipment - Summary of Property and Equipment (Details) (USD $)
 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Jun. 30, 2013
Jun. 30, 2013
Minimum
Dec. 31, 2012
Minimum
Jun. 30, 2013
Maximum
Dec. 31, 2012
Maximum
Dec. 31, 2012
Machinery and Equipment
Dec. 31, 2011
Machinery and Equipment
Jun. 30, 2013
Machinery and Equipment
Minimum
Dec. 31, 2012
Machinery and Equipment
Minimum
Jun. 30, 2013
Machinery and Equipment
Maximum
Dec. 31, 2012
Machinery and Equipment
Maximum
Dec. 31, 2012
Furniture and Fixtures
Dec. 31, 2011
Furniture and Fixtures
Dec. 31, 2012
Computer Software
Dec. 31, 2011
Computer Software
Dec. 31, 2012
Computer Software
Minimum
Dec. 31, 2012
Computer Software
Maximum
Dec. 31, 2012
Leasehold improvements
Dec. 31, 2011
Leasehold improvements
Property, Plant and Equipment [Line Items]                                            
Property and equipment, gross $ 915,649 $ 695,938             $ 478,290 $ 355,985         $ 54,058 $ 48,157 $ 56,935 $ 46,355     $ 326,366 [1] $ 245,441 [1]
Less: accumulated depreciation and amortization (480,037) (310,159)                                        
Net property, plant and equipment 435,612 385,779   649,309                                    
Useful life         3 years 3 years 15 years 7 years     5 years 5 years 8 years 6 months 7 years 5 years       3 years 5 years    
Depreciation and Amortization $ 169,878 $ 134,295 $ 77,346                                      
[1] Lesser of estimated useful life of asset or lease term.