A detention hearing is being held for a 44-year-old woman charged with misappropriating more than half a million dollars from a Maine bank where she was a longtime employee. Shauna Quinn of Rockland was arrested Friday on a bank fraud charge for allegedly misappropriating $538,000 at Rockland Savings Bank between 2008 and 2011. Prosecutors say she used her employee privileges to increase lines of credit and make unauthorized loans to family members. U.S. Magistrate John Rich III on Monday ordered Quinn to remain in custody until a detention hearing can be heard Tuesday afternoon. If convicted, she faces up to 30 years in prison.