Police officers in Bergen County held onto a teenager who tried to jump off a motel balcony in Lyndhurst over the weekend after he was accused of stealing a bicycle, authorities said. The 17-year-old took the bike from another boy who reported the incident about 9:25 p.m. Saturday to a Lyndhurst police officer patrolling Town Hall Park on Delafield Avenue, authorities said. An officer spotted the teen dressed in black and wearing a ski mask as he rode the stolen bike west on Lake Avenue before turning onto Kearney Street, according to Lyndhurst police Detective Lt. Vincent Auteri. Police lost …