Subsequent events (Narrative) (Details) (USD $)	6 Months Ended
	Jul. 31, 2014 D
Subsequent Events 1	$ 36,802
Subsequent Events 2	3,983,507
Subsequent Events 3	150,000
Subsequent Events 4	12.00%
Subsequent Events 5	45.00%
Subsequent Events 6	10
Subsequent Events 7	$ 75,000