You might want to read the company presentation. All 145 aircraft will be parked by mid 2016 along with all the 190s. The presentation also blames the pilots for voting no to "pay increases and better working conditions".

The announcement also indicates the Chautauqua operating certificate will be merged with the Shuttle America certificate by end of 2014. In my opinion this opens the door to merge S5 and YX in 2016 when we only have 170s flying around.